public async Task <IActionResult> Create(DestinationViewModel model)
        {
            if (ModelState.IsValid)
            {
                City city = await _countryRepository.GetCityAsync(model.CityId);

                Country country = _countryRepository.GetCountryAsync(city);

                User user = await _userHelper.GetUserByEmailAsync(User.Identity.Name);

                Destination destination = new Destination()
                {
                    Airport = model.Airport,
                    IATA    = model.IATA,
                    City    = city,
                    Country = country,
                    User    = user,
                };

                try
                {
                    await _repository.CreateAsync(destination); // Ao usar o create grava logo

                    return(RedirectToAction(nameof(Index)));    //Redirecionamento para a página
                                                                // nameof(Index) é o mesmo que colocar ("Index")
                }
                catch (Exception ex)
                {
                    if (ex.InnerException.Message.Contains("duplicate"))
                    {
                        model.CityId    = 0;
                        model.CountryId = 0;
                        model.Cities    = _countryRepository.GetComboCities(0);
                        model.Countries = _countryRepository.GetComboCountries();
                        ModelState.AddModelError(string.Empty, "Already exists a destination with that IATA");
                        return(View(model));
                    }

                    else
                    {
                        ModelState.AddModelError(string.Empty, ex.InnerException.Message);
                        model.Cities    = _countryRepository.GetComboCities(0);
                        model.Countries = _countryRepository.GetComboCountries();
                        return(View(model));
                    }
                }
            }
            return(View(model));
        }